Question

The table shows the percent of adults who used computers from 1984
through 2007. What was the rate of change from 1989 to 2007?

Answer 1

Answer:

3.1 (nearest tenth)

Step-by-step explanation:

Year (independent variable) = x

Percent of adults (dependent variable) = y

Rate of change is given as = $\frac{y_2 - y_1}{x_2 - x_1}$.

Let,

$(1989, 20) = (x_1, y_1)$

$(2007, 76) = (x_2, y_2)$

Plug in the values into the equation

Rate of change = $\frac{76 - 20}{2007 - 1989}$

Rate of change = $\frac{56}{18} = 3.1$ (nearest tenth)